If you need emergency power for passing or whatever, punch it. Otherwise use common sense and good judgement. Anytime you apply max power from a standstill, you are applying max stress to the drivetrain. Drop shifting also falls in the max stress category. You have a reliable unit in your car. If you are driving with the pedal to the floor and you decide to unload the drivetrain by getting off the gas as it shifts, be sure you get the timing of this move correct, or you may end up putting a large deceleration load on the drivetrain if you don't get it right. Just use common sense and you will be fine.
2000 Dodge Grand Caravan SE
No matter what you fix, there will always be something else to fix..
"Warranty" is just another way of postponing the inevitable.